Dipping board or frame



A. F. FROMME DIPPING BOARD QR FRAME Fil ed May 25, 1924 IN VEA TOR. 17 Elm; (E -La.

ATTORNEY.

Patented Sept. 22, 1925.

UNITED STATES AUGUST r. FROMME, or cLEvELANnoHIo.

nrrrme BOARD on FRAME.

.Appl icationfiled. May 26,

To all whom it may concern.

Be it known that I, AUGUsT F. FROMME, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Dipping Boards or Frames, of which the following is a specification. V

This invention is a dipping board or frame designed for use in the manufacturing or molding of various rubber articles such as toy balloons etc., having for an object to provide a structure which is practically indestructible and considerably reduced in weight as compared with the boards or frames used at the present time.

A further object is to provide a dipping board or frame of this character so constructed that upon assembling a set for molding articles, a plurality of openings or spaces will be formed, through which heat may pass in order to speedily cure the articles.

It is likewise an object to form a dipping board of cast metal which will not corrode and to fix pegs thereon in such a manner that they will not become loose and permit the molded articles to kiss or touch one another.

Other objects will be in part obvious and in part pointed out hereinafter.

In order that the invention and its mode of operation may be readily understood by persons skilled in the art, I have in the accompanying illustrative drawings, and in the following detailed description based thereon set out one possible embodiment of the same.

Figure 1 is a plan View of a set of dipping boards assembled and constructed in iaccordance with my invention;

Figure 2 is a bottom plan view of one of the boards;

Figure 3 is a longitudinal sectional view of one of the boards or frames; and

Figure 4 is a transverse sectional view taken substantially on the line 4-t of Figure 2.

The usual dipping board employed at the present time is constructed of hard wood and carries a set of upstanding pins upon which the molds are arranged. These boards, when assembled, form a solid platform through which heat cannot pass and consequently the curing of molded articles is exceedingly retarded and unsatisfactory.

1924. Seria1No.715,925.

The heat must necessarily pass around the opposite sides and ends of the set of boards and results in completely curing the articles at the ends of the boards prior to completion of the curing of those near the central portion, as 13 quite apparent. -These boards are subjected to rather rough usage and quite often will split from one end to the other and loosen or possibly entirely displace afnumber of the mould supporting pins, thereby reducing the efficiency of'operation due to the fact that a single board may be carrying only about '50 or 60% of its full capacity. These are a few ofthe common faults of the ordinarily constructed dipping boards which are entirely overcome through the construction hereinafter set forth. i

My improved dipping board or frame 5 is preferably made up of cast aluminum carrying a set of spaced upstanding brass pins 6 upon which the mold members are rotatably mounted. Each dipping board or frame is widened at each end 7 and provided with a continuous depending flange 5' around its entire edge, this structure pro-- viding upon assembly, as shown in Figure 1, spaces between the boards such as will allow passage of heat into contact with the articles being cured. In order to further facilitate passage of heat into contact with the articles being cured I provide each board or frame with a central longitudinal opening 8 Whose longitudinal walls are connected at intervals with ribs or the like 9.

Each of the mold. carrying pins 6 is tightly driven into an opening in the board 5 and is rigidly held therein thru the provision of a boss 10 integrally cast upon the under side of the frame. These bosses 10 are slightly spaced from the longitudinal walls of the central opening 8 and are connected by reinforcing ribs 11 as shown in Figures 2 and 4 of the accompanying drawings. Each of the ribs 9 connecting the longitudinal walls of the central opening 8, carries a reinforcing rib which connects the adjacent bosses as shown in the bottom plan View of the, drawings. This structure obviously provides a dipping board or frame which is practically indestructible and of unusually light weight.

In using these boards the usual molds are arranged upon the upstanding pins and the rubber articles are carried thereby for ouring. hose frames are set upon a support as shown in Figure 1, and when thus assembled provide spaces 12 between the boards for the passage of heat as heretofore outlined.

When removing these frames or boards, the

operators usually grasp the pairs. of pins or molds at the opposite ends, and where the usual construction is employed, these pins become loosened in a short time. Due to the] particular mounting of these pins as heretorfqre outlined, this fault is entirely overcome, and the frames may be engaged with buffers in the usual manner without any undesired efiee-ts on the pins or frame.

Certain changes in the minor details of construction may be resorted to and such changes as fall within the scope of the appended claims I consider within the spirit of my invention,

1 c a m 1,

l. A dipping board consisting of an elongated flat hav ng ts ends o g ea er width than its intermediate portions, and a set; of upstanding mold supporting pins arangedupon the ember.

2 A dipping board consisting of an elongated fiat member, having a central 10ngitudinal vertical 0 ening therein, and a set of upstanding mo d supporting pins arranqed upon the member at opposite sides eftie opening. 1

3. A dipping board consisting of an elongated fl'at member having a central longitudinal vertical opening, said member being of greater width at its ends than therebetween, and a set of upstanding mold supporting pins arranged upon the member at opposite sides of the openings.

4. A dipping board consisting of an elongated flat member having a central longitudinal vertical opening, the ends of said member being of greater width than the intermediate portions, a set of spaced bosses depending from the underside of said member and having vertical apertures openin through the upper side of the member, an a set of upstanding mold supporting pins having their lower ends tightly fitting in the apertures In testimony whereof, I afiix my signature.

AUGUST F. FROMME. 

